Safety-razor sharpener.



C. SCHAUIVIBURG.

SAFETY RAZOR SHARPENER.

APPLICATION FILED FEB.7.1918.

1 91 179, Patented Jan.14,1919.

2 SHEETS$HEET 1| INVENTOR C. SCHAUMBURG.

SAFETY RAZOR SHARPENER.

APPLICATION FILED FEB. 1. 191a.

Patented Jan. 14, 1919.

2 SHEETSSHEET 2.

1 IINVENTOR: fhd jdmwwfiwrg TMSSLJWS.

s eareatnm of Letters Patent. p r t ra r Mg age Application filed. February t, 191%. serial No. 215,?81.

To all witom may concern:

Be it known that T, CHARnns SCHAUM- mono, a citizen of the United States, resid ing at Seattle, in the county of King-and State of Washington, have invented certain new and useful Improvements in Safety- 7 name Sharpeners, of which the following is a specification. I This invention relates to certain improve ments in sharpenin machines, and especiallyto that class machines designed and adapted-for sharpening or. stropping razor blades.

The main object of the invention is to provide a'machine of this character of a simple and inexpensive construction adapted to sharpen razor blades in an even and'uni form manner so as to efiect an economy of time and labor and to render the actions of the machine commercially profitable.

other object is to provide a holder and governing means therefor which will support the blades to most efi'ectually present the edges thereof to the belts while being sharpened and also serving to positively retain the blades out of contact with the belts to prevent the latter becoming mutilated by the blades when being introduced into flit claimed.

lib

taken on line 4:4 of Fig. 1-. Fig. 5- is a partial end elevation taken from the lefthand sides of Figs. 1 and 2. Fig, 6' is adetail sectionithrough 66 of Fig. 3.

In said drawings, 10' and 10 represent side members'bf the machine frame, and 11 represent transverse rods rigidly connecting said members in spaced relations. The side members of the frame are provided with journal bearings 12 and 13 near one end or the machine for shafts 12 and 13 of driv ing pulleys 1i and 15, about which pass endless belts 16 and 1'? ertending-horizontallyto and. about pulleys 14: and 15 mounted on shafts 12 and 13 which are respectively,

journaled in boxes 18 and 18 adjacent to the other-end of the frame. The boxes 18 and 18 are slidable in slots 10 provided in the frame members and are arranged to be adjustably moved by take-up screws 19 and "nuts 20.

Mounted on the shaft .13 is a pulley 21 for a power driven belt, not shown, and the two shafts l2 and 13 are provided with intermeshing toothed gear wheels 22, 22

whereby the'pulleys 14 and 15 are rotated to drive the belts 16 and 17 at approximately the same speed and in the direction indicated by arrows A in Fig. 2.

The frame members 10, 10 are provided with pairs of guide holes 23, 23 (see Fig. 3) for horizontal guide rods 24: extending from upright bars 25 at one side of the machine frame. Each of these bars is provided near its upper end witha journal hearing 26 for a horizontal rock shaft 27 extending through slots 28 formed in said frame members and journaled in bracket boxes 29 secured to the frame memberlO remote from the bars 25.

Each bar 25 and the associated guideroliis and rock shafts constitute what will. be hereinafter designated as a carrier, said rods and rock shafts F being arranged horizontally inangular relations to the machine frame, as shown in Figs. 1 and To each of said rock shafts is secured a work-holder comprising a pair of opposed spring jaws 30, 30 (hig. 6), which are caused to engage a razor blade 31 by means of a'cam 32 journaled in wing elements of a strap 32 said cam being controlled by a finger-piece 33 to effect the engagement or release of a blade.

The various rock shafts 27 are provided with longitudinal grooves, 27 one end of each groove being curved, as indicated by 27 near the outer end of a shaft, and the other end of 'a groove terminates in a recess 27 of greater width than the groove.

' 3% represents screws provided in the bracket boxes 29 and taking in the respective grooves of the rock shafts to serve as "spline elements.

Provided on each rock shaft is a coil sprin 35, an end 35 of each engaging in a hole ormed in the shaft and the other end of the spring is bent or formed to afford a I finger 35 which is engageable in a notch 36 provided therefor in a reciprocating bar 37. This bar is guided by means of an extension 37 operating in abearing 38 of the machine, and is connected by a rod 37 with a slotted lever 39 (Fig; 4:) fulcrumed to a pin 40.

Lever 39 is vibrated by means of a cam 41 located in the slot of said lever and rotatable on a stub shaft 42 by means of spur gears 43 and 43 from the power-driven shaft 13 J ournaled in the frame members 10, 10 above the lower lead of belt 16 and below the upper lead of belt 17 are the axles 44 of rollers 45 (which for clearness have been omitted from Fig. 1) which serve to prevent the referred-to belt leads from being unduly deflected by the razor blades when brought thereagainst.

In operation, the abrading belts 16 and 17 are driven continuously in the direction indicated by arrows A in Fig. 2, and the bar 37 is reciprocated longitudinally of the machine by means of the vibrating lever 39. The razor blades are clamped between the jaws 3030 of the respective holders when the carriers are in their outermost position, as shown in'Fig. 3, or by the left hand one H in Fig. 1.

The .carriers are then pushed into the frame to occupy positions similar to holders H and H in Fig. 1.

In being thus adjusted the screws 34 acting first in the grooved portion 27 will cause the respective rocker shaft to be rotated approximately 90 to swing the blade from an upright position, as shown with respect to holder H into a horizontal position which will occur when a screw 34' is engaged by the straight portion 27 of a shaft groove, resulting in a blade being held away from both of the belts 16 and 17.

When a carrier has been pushed sufliciently far to cause the associated screw-3a to enter a recess 27 the rock shaft is free to oscillate, but meanwhile the finger element 35 of a spring 35 will engage in a notch 36 of bar 37, whereupon the rock shaft is influenced thereby to impart oscillatory movements to the blade so as to alternately engage belts 16 and 17.

The travel of the bar 37 is, however, somewhat greater than necessary to carry the blade into contact with the belts, the excess movement. being compensated for by the yielding of the spring with a consequent pressure of a blade against the belts suflicient to insure good sharpening effects.

After being subjected for a time to the action of the belts, the carriers may be individually withdrawn to'test the sharpness of a blade, and may be returned into position to be further sharpened withoutremoving the blade from the holder jaws. In

thus moving a holder into or from operative positions, the blade is held away from the belts so as not to cut the same, and when outside of the machine frame, the jaws and blade are presented in upright position.

What I claim, is

1. The combination with a frame, an endless abrading belt and driving means therefor, of a carrier transversely movable in said frame, said carrier being provided with a blade-holder arranged for oscillatory movements, a reciprocatory bar, means to actuate the same, and means on the carrier for oscillating the blade holder and adapted to engage said bar when the carrier is moved in one direction, and be disengaged therefrom when the carrier is moved in the opposite direction.

2. The combination with a frame, endless abrading belts and driving means therefor, of a carrier having guide rods movable in bearings provided in said frame, a rock shaft journaled in said carrier and in a bearing provided in said frame, a bladeholder provided on the rock shaft, and means on the carrier for oscillating the blade holder and adapted to engage said bar when the carrier is moved in one direction and be disengaged therefrom when the carrier is moved in the opposite direction.

3. The combination with a frame, an end less abrading belt, and means to drive the same, of a carrier movable in said frame, transversely to the direction of the travel of said belt, said carrier having a rock shaft, and a blade holder thereon, means engaging said shaft to cause said holder to be held in horizontal position when being moved with the carrier into the frame and also serving to present the holder in substantially upright position when withdrawn from the frame, and means to oscillate the rock shaft and said holder when the latter is 1in operative position with respect to said 4. The combination with the machine frame, endless abrading belts, and means to drive the same, of a carrier movable in said frame, in an angular direction with respect to that of the travel of said belts, a rock shaft provided on said carrier, a blade holder secured to said rock shaft, a reciprocating bar, means provided on said rock shaft and engageable with said bar for oscillating the shaft and said holder, and means cooperating with said shaft for regulating the position of said holder as the latter is moved with the carrier to and from its operative position.

5. The combination with the machine frame, endless abrading-belts, and means to drive the same, of a carrier movable in said frame in an angular direction with respect to that of the travel of said belts, a rock shaft provided on said carrier, said shaft emme i 8 being provided with a oove extending ionthe carrier to and from its operative posigitudinolly thereof, a lode; holder secured tion, 10 to said rock shaft, a reciprocating bar, re- Signed at Seattle, ashingt-on, this 30th silient means provided on. said rook shaft day of January, 1918. i

5 and engageable with said bar for oscillating CHARLESSC G. the shaft and said holder, and means engeg- Witnesses:

ing seid groove for re lating the position I BARNES,

of said holder as the other is moved'with E. 0N. 

